Who _____ basketball well in your class? [ ]
A. play
B. playing
C. plays
D. to play
答案:C
如何理解审计人员应有的职业谨慎?
如果电路只有电抗,短路全电流最大有效值ich为超瞬变短路电流的()。
A.2倍
B.倍
C./2倍
D.3倍